CVE-2026-59992Tina: Broken Access Control: arbitrary bucket-key write/delete in `next-tinacms-s3` (and sibling production media adapters)
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No exploitation reported and no EPSS estimate yet.
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Tina is a headless content management system. Prior to next-tinacms-s3 23.0.4, next-tinacms-dos 23.0.4, next-tinacms-azure 14.0.4, and next-tinacms-cloudinary 26.0.4, the first-party production media adapters pass attacker-controlled object keys to storage SDK upload and delete operations without enforcing the operator's configured mediaRoot. In packages/next-tinacms-s3/src/handlers.ts, createMediaHandler accepts req.query.key for a signed PutObject URL and the DELETE path uses req.query.media as the DeleteObjectCommand key. The same missing key-boundary check exists in packages/next-tinacms-dos/src/handlers.ts, packages/next-tinacms-azure/src/handlers.ts, and packages/next-tinacms-cloudinary/src/handlers.ts. An authenticated CMS editor can therefore create or delete objects anywhere the deployment's storage credential can reach, including other tenants' or non-media objects. These issues are fixed in next-tinacms-s3 23.0.4, next-tinacms-dos 23.0.4, next-tinacms-azure 14.0.4, and next-tinacms-cloudinary 26.0.4.
- CVSS
- 5.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
- Weakness (CWE)
- CWE-639, CWE-862
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Deferred
- Record last updated
- Aug 21, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
tinacms tinacms tinacms:tinacms (from the name) | before 23.0.4 | CNA record |
tinacms next-tinacms-s3 tinacms:next_tinacms_s3 (from the name) | before 23.0.4 | CNA record |
tinacms next-tinacms-dos tinacms:next_tinacms_dos (from the name) | before 23.0.4 | CNA record |
tinacms next-tinacms-azure tinacms:next_tinacms_azure (from the name) | before 14.0.4 | CNA record |
tinacms next-tinacms-cloudinary tinacms:next_tinacms_cloudinary (from the name) | before 26.0.4 | CNA record |
References
- https://github.com/tinacms/tinacms/security/advisories/GHSA-8mq9-5fw2-5rm4x-refsource-confirm
- https://github.com/tinacms/tinacms/pull/7088x-refsource-misc
- https://github.com/tinacms/tinacms/commit/d44558e9b4502d4f4fc2c970d22985339fe2b6cex-refsource-misc
- https://github.com/tinacms/tinacms/releases/tag/next-tinacms-s3@23.0.4x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.